In which of the following network types does the OSPF protocol need to elect DR and BDR? (Multiple choice)

• A.NBMA
• B.Point to multipoint
• C.Point-to-point type
• D.Broadcast type

Comment: *

Name: *

Email: *

Verification: *

All ports on the root bridge switch are designated ports.

• A.False
• B.True

Comment: *

Name: *

Email: *

Verification: *

The RSTP protocol uses the P/A mechanism to speed up the speed of the upstream port to the Forwarding state, but what is the reason why there is no temporary loop?

• A.Speed up port role election
• B.Shorten the time of Forward Delay
• C.Edge ports are introduced
• D.Through the synchronization mechanism to ensure that no temporary loop occurs

Comment: *

Name: *

Email: *

Verification: *

Which of the following functions does the LCP protocol in the PPP protocol support?

• A.Detect link loops
• B.Negotiate network layer address
• C.Negotiate the maximum receiving unit MRU
• D.Negotiate authentication agreement

Comment: *

Name: *

Email: *

Verification: *

A DHCP server is deployed in the network, but the administrator found that some hosts did not correctly obtain the address specified by the DHCP server. What are the possible reasons? (Multiple choice)

• A.Some hosts cannot communicate with the DHCP server normally, and the client systems of these hosts automatically generate addresses in the range of 127.254.0.0
• B.There is another DHCP server in the network that works more efficiently
• C.The address pool of the DHCP server has all been allocated
• D.Some hosts cannot communicate with the DHCP server normally, and the client systems of these hosts automatically generate addresses in the range of 169.254 0.0

Comment: *

Name: *

Email: *

Verification: *